org.apache.flink.runtime.io.network.partition.PartitionTracker Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.flink.runtime.io.network.partition;
import java.util.Collection;
/**
* Utility for tracking partitions.
*
* This interface deliberately does not have a method to start tracking partitions, so that implementation are
* flexible in their definitions for this method (otherwise one would end up with multiple methods, with one part likely
* being unused).
*/
public interface PartitionTracker {
/**
* Stops the tracking of all partitions for the given key.
*/
Collection> stopTrackingPartitionsFor(K key);
/**
* Stops the tracking of the given partitions.
*/
Collection> stopTrackingPartitions(Collection resultPartitionIds);
/**
* Returns whether any partition is being tracked for the given key.
*/
boolean isTrackingPartitionsFor(K key);
/**
* Returns whether the given partition is being tracked.
*/
boolean isPartitionTracked(ResultPartitionID resultPartitionID);
}